The mean and standard deviations for a process are (mean) ? = 140 and (sigma) ? =

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The mean and standard deviations for a process are (mean) ? = 140 and (sigma) ? = 12, respectively. For the variable control chart, a sample size of 9 will be used. Calculate the standard deviation of the sample means.

Select one:

a. 3

b. 2.5

c. 4

d. 2.25

e. cannot be found

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Essentials of Investments

ISBN: 978-0078034695

9th edition

Authors: Zvi Bodie, Alex Kane, Alan Marcus

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Posted Date: Jan 25, 2021 07:50 AM

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The mean and standard deviations for a process are (mean) ? = 140 and (sigma) ? =

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Essentials of Investments

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